Card Range To Study

17 Cards in this Set

The accumulation of biomess in ecess of "maintenance costs" (ie. respiration)

Productivity

rate of accumulation of biomass

Pilot Study/ Reconnaissance

simple study to make observations and decide methods, hypothesis, species, events, questions to be answered

Exclusion Experiment

Manipulate experiment so as to exclude a main factor

4 Steps for Experimentation

1st: Pilot Study
2nd: Exlusion Experiment (Validate Exp. 1/establish underlying cause of observed effect)
3rd: Validate exp. 1 and 2 at larger scales
4th: Go back and test to see if same result in a different way

Plant Productivity

Producing O2 through photosynthesis and consuming O2 through respiration

Cage Effect

animal does behavior that is totally different from nature because stressed from being in cage- uncontrolled variable= not natural

Supplementation Experiment

Provide each limiting factor in excess to see what is causing a change/competition

Benthos

The collection or organisms living or in sea or lake bottoms; the bottom of a sea or lake

Periphyton

Sessile organisms, such as algae and small crustaceans, that live attached to surfaces projecting from the bottom of a freshwater aquatic environment

Abiotic

Nonliving factors of an environment

Biotic

Living factors of an environment

Mesocosms

These are contained pot experiments in a glasshouse that represent an intermediate stage of study, between the single-species tests and the field trials

Helicopsyche

Larvae caddislfy that is a grazer taht feeds on alae on rocks

Uncontrolled Variables

Variables that are unable to be controlled during an experiment, thus must be taken into account when conclusions are drawn